For the sort of issues that you apparently bring to therapy, there is no problem with how you use out of session contact. But if your T has another client whose best interests would not be served by unrestricted contact, and so she instituted boundaries for that client, would that make your T not a good T?

There are poor Ts who make blanket stupid policies about outside contact; there are good Ts that make policies appropriate for each client about outside contact. There are bad reasons for forbidding contact and good reasons for forbidding contact. It isn't about customer service, it's about psychological treatment.